/* ===================================================================
   Ant Design 5 Inspired Design Tokens & Styles
   =================================================================== */

:root {
  /* Ant Design 5 color palette */
  --colorPrimary: #1677ff;
  --colorPrimaryHover: #4096ff;
  --colorPrimaryBg: #e6f4ff;
  --colorPrimaryBorder: #91caff;

  --colorText: rgba(0, 0, 0, 0.88);
  --colorTextSecondary: rgba(0, 0, 0, 0.65);
  --colorTextTertiary: rgba(0, 0, 0, 0.45);
  --colorTextQuaternary: rgba(0, 0, 0, 0.25);

  --colorBgContainer: #ffffff;
  --colorBgLayout: #f5f5f5;
  --colorBgElevated: #ffffff;
  --colorBgSpotlight: rgba(0, 0, 0, 0.85);

  --colorBorder: #d9d9d9;
  --colorBorderSecondary: #f0f0f0;
  --colorSplit: rgba(5, 5, 5, 0.06);
  --colorFill: rgba(0, 0, 0, 0.15);
  --colorFillSecondary: rgba(0, 0, 0, 0.06);
  --colorFillTertiary: rgba(0, 0, 0, 0.04);
  --colorFillQuaternary: rgba(0, 0, 0, 0.02);

  --colorSuccess: #52c41a;
  --colorWarning: #faad14;
  --colorError: #ff4d4f;
  --colorInfo: #1677ff;

  /* Typography */
  --fontFamily: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --fontSize: 14px;
  --fontSizeSm: 12px;
  --fontSizeLg: 16px;
  --fontSizeXl: 20px;
  --fontSizeHeading1: 38px;
  --fontSizeHeading2: 30px;
  --fontSizeHeading3: 24px;
  --fontSizeHeading4: 20px;
  --fontSizeHeading5: 16px;
  --lineHeight: 1.5714;
  --fontWeightStrong: 600;

  /* Spacing */
  --paddingXS: 8px;
  --paddingSM: 12px;
  --padding: 16px;
  --paddingLG: 24px;
  --paddingXL: 32px;
  --marginXS: 8px;
  --marginSM: 12px;
  --margin: 16px;
  --marginLG: 24px;
  --marginXL: 32px;

  /* Border Radius */
  --borderRadiusSM: 4px;
  --borderRadius: 6px;
  --borderRadiusLG: 8px;
  --borderRadiusXL: 12px;

  /* Shadow */
  --boxShadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03),
    0 1px 6px -1px rgba(0, 0, 0, 0.02),
    0 2px 4px 0 rgba(0, 0, 0, 0.02);
  --boxShadowSecondary: 0 6px 16px 0 rgba(0, 0, 0, 0.08),
    0 3px 6px -4px rgba(0, 0, 0, 0.12),
    0 9px 28px 8px rgba(0, 0, 0, 0.05);
  --boxShadowTertiary: 0 1px 2px 0 rgba(0, 0, 0, 0.03),
    0 1px 6px -1px rgba(0, 0, 0, 0.02),
    0 2px 4px 0 rgba(0, 0, 0, 0.02);

  /* Layout */
  --maxWidth: 1000px;

  /* Motion */
  --motionDuration: 0.2s;
  --motionEase: cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--colorBgLayout);
  color: var(--colorText);
  font-family: var(--fontFamily);
  font-size: var(--fontSize);
  line-height: var(--lineHeight);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--colorPrimary);
  text-decoration: none;
  transition: color var(--motionDuration) var(--motionEase);
}

a:hover {
  color: var(--colorPrimaryHover);
}

/* ===== Layout ===== */
.wrap {
  max-width: var(--maxWidth);
  margin: 0 auto;
  padding: var(--paddingLG) var(--padding) 80px;
}

/* ===== Header ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--paddingSM) var(--paddingLG);
  background: var(--colorBgContainer);
  border-bottom: 1px solid var(--colorBorderSecondary);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.88);
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--marginXS);
  font-weight: var(--fontWeightStrong);
  font-size: var(--fontSizeLg);
  color: var(--colorText);
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--colorPrimary);
}

/* ===== Like Button ===== */
.like-container {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: var(--margin);
  margin-right: auto;
}

.like-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--colorBorder);
  background: var(--colorBgContainer);
  cursor: pointer;
  transition: all var(--motionDuration) var(--motionEase);
  padding: 0;
}

.like-btn:hover {
  border-color: var(--colorError);
  background: #fff1f0;
  transform: scale(1.1);
}

.like-btn.liked {
  border-color: var(--colorError);
  background: #fff1f0;
}

.like-btn.liked #likeIcon {
  color: var(--colorError);
  animation: heartBeat 0.3s ease;
}

.like-btn:not(.liked) #likeIcon {
  color: var(--colorTextTertiary);
}

.like-btn:not(.liked):hover #likeIcon {
  color: var(--colorError);
}

.like-count {
  font-size: var(--fontSizeSm);
  color: var(--colorTextSecondary);
  font-weight: var(--fontWeightStrong);
  min-width: 20px;
}

@keyframes heartBeat {
  0% { transform: scale(1); }
  25% { transform: scale(1.3); }
  50% { transform: scale(1); }
  75% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

@keyframes heartBurst {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

.like-btn.liked::after {
  content: '';
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--colorError);
  animation: heartBurst 0.5s ease forwards;
}

.nav {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav a {
  padding: 6px 12px;
  border-radius: var(--borderRadius);
  color: var(--colorTextSecondary);
  font-size: var(--fontSize);
  transition: all var(--motionDuration) var(--motionEase);
}

.nav a:hover {
  color: var(--colorPrimary);
  background: var(--colorPrimaryBg);
  text-decoration: none;
}

/* ===== Card ===== */
.card {
  background: var(--colorBgContainer);
  border-radius: var(--borderRadiusLG);
  box-shadow: var(--boxShadow);
  border: 1px solid var(--colorBorderSecondary);
  padding: var(--paddingLG);
  margin-bottom: var(--marginLG);
  transition: box-shadow var(--motionDuration) var(--motionEase);
}

.card-title {
  font-size: var(--fontSizeHeading5);
  font-weight: var(--fontWeightStrong);
  color: var(--colorText);
  margin: 0 0 var(--marginLG);
  padding-bottom: var(--paddingSM);
  border-bottom: 1px solid var(--colorBorderSecondary);
  display: flex;
  align-items: center;
  gap: var(--marginXS);
}

.card-title .icon {
  color: var(--colorPrimary);
  font-size: var(--fontSizeLg);
}

/* ===== Hero / Profile ===== */
.hero {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--paddingLG);
  align-items: start;
}

.photo {
  width: 180px;
  height: 240px;
  border-radius: var(--borderRadiusLG);
  overflow: hidden;
  border: 1px solid var(--colorBorderSecondary);
  box-shadow: var(--boxShadow);
}

.photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.intro h1 {
  margin: 0 0 var(--marginXS);
  font-size: var(--fontSizeHeading4);
  font-weight: var(--fontWeightStrong);
  color: var(--colorText);
  line-height: 1.3;
}

.intro .subtitle {
  color: var(--colorTextSecondary);
  font-size: var(--fontSize);
  margin-bottom: var(--margin);
  display: flex;
  align-items: center;
  gap: var(--marginXS);
}

.intro .subtitle .dot-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--colorTextQuaternary);
  display: inline-block;
}

.intro .bio {
  color: var(--colorText);
  font-size: var(--fontSize);
  line-height: 1.8;
  margin: 0 0 var(--marginLG);
}

/* ===== Link Buttons ===== */
.link-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--marginXS);
  margin-bottom: var(--marginLG);
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  height: 32px;
  font-size: var(--fontSize);
  border-radius: var(--borderRadius);
  border: 1px solid var(--colorBorder);
  background: var(--colorBgContainer);
  color: var(--colorText);
  cursor: pointer;
  transition: all var(--motionDuration) var(--motionEase);
  text-decoration: none;
}

.link-btn:hover {
  color: var(--colorPrimary);
  border-color: var(--colorPrimary);
  text-decoration: none;
}

.link-btn.primary {
  background: var(--colorPrimary);
  border-color: var(--colorPrimary);
  color: #fff;
}

.link-btn.primary:hover {
  background: var(--colorPrimaryHover);
  border-color: var(--colorPrimaryHover);
  color: #fff;
}

.link-btn i {
  font-size: var(--fontSize);
}

/* ===== Affiliations ===== */
.affiliations {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--margin);
  padding-top: var(--paddingSM);
  border-top: 1px solid var(--colorBorderSecondary);
}

.affiliation {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--marginXS);
  text-align: center;
  padding: var(--paddingSM) var(--paddingXS);
  border-radius: var(--borderRadiusLG);
  border: 1px solid transparent;
  transition: all var(--motionDuration) var(--motionEase);
  cursor: default;
}

.affiliation:hover {
  background: var(--colorFillQuaternary);
  border-color: var(--colorBorderSecondary);
}

.affiliation .logo-box {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.affiliation .logo-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  transition: transform var(--motionDuration) var(--motionEase);
}

.affiliation:hover .logo-box img {
  transform: scale(1.08);
}

.affiliation .aff-name {
  font-size: var(--fontSizeSm);
  color: var(--colorTextSecondary);
  line-height: 1.3;
  font-weight: 500;
}

.affiliation .label {
  font-size: 11px;
  color: var(--colorPrimary);
  padding: 1px 8px;
  background: var(--colorPrimaryBg);
  border-radius: var(--borderRadiusSM);
  border: 1px solid var(--colorPrimaryBorder);
  white-space: nowrap;
}

/* ===== Timeline (News) ===== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--colorBorderSecondary);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  padding-left: 28px;
  padding-bottom: var(--margin);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--colorPrimary);
  background: var(--colorBgContainer);
  z-index: 1;
}

.timeline-item .time {
  font-size: var(--fontSizeSm);
  color: var(--colorTextTertiary);
  font-weight: var(--fontWeightStrong);
  margin-bottom: 2px;
}

.timeline-item .desc {
  color: var(--colorText);
  font-size: var(--fontSize);
  line-height: 1.6;
}

/* ===== Filter Tags (Publications) ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--marginXS);
  margin-bottom: var(--margin);
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  font-size: var(--fontSizeSm);
  border-radius: var(--borderRadiusSM);
  border: 1px solid var(--colorBorder);
  background: var(--colorBgContainer);
  color: var(--colorTextSecondary);
  cursor: pointer;
  user-select: none;
  transition: all var(--motionDuration) var(--motionEase);
}

.filter-tag:hover {
  color: var(--colorPrimary);
  border-color: var(--colorPrimaryBorder);
}

.filter-tag[aria-pressed="true"] {
  color: var(--colorPrimary);
  border-color: var(--colorPrimary);
  background: var(--colorPrimaryBg);
}

/* ===== Publication Card ===== */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: var(--margin);
}

.pub {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--padding);
  padding: var(--padding);
  border: 1px solid var(--colorBorderSecondary);
  border-radius: var(--borderRadiusLG);
  background: var(--colorBgContainer);
  transition: all var(--motionDuration) var(--motionEase);
}

.pub:hover {
  box-shadow: var(--boxShadowSecondary);
  border-color: var(--colorPrimaryBorder);
}

.pub .thumb {
  width: 180px;
  height: 120px;
  border-radius: var(--borderRadius);
  overflow: hidden;
  background: var(--colorFillQuaternary);
  border: 1px solid var(--colorBorderSecondary);
}

.pub .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pub .content {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.pub .ptitle {
  font-weight: var(--fontWeightStrong);
  font-size: var(--fontSize);
  color: var(--colorText);
  line-height: 1.4;
}

.pub .pauth {
  color: var(--colorTextSecondary);
  font-size: var(--fontSize);
  margin-top: 4px;
  line-height: 1.5;
}

.pub .pmeta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--colorPrimary);
  font-size: var(--fontSizeSm);
  font-weight: var(--fontWeightStrong);
  margin-top: 6px;
}

.pub .pmeta .venue-badge {
  padding: 1px 8px;
  background: var(--colorPrimaryBg);
  border-radius: var(--borderRadiusSM);
  border: 1px solid var(--colorPrimaryBorder);
}

.pub .plinkline {
  margin-top: var(--marginXS);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pub .plinkline a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  font-size: var(--fontSizeSm);
  border-radius: var(--borderRadiusSM);
  border: 1px solid var(--colorBorder);
  color: var(--colorTextSecondary);
  transition: all var(--motionDuration) var(--motionEase);
}

.pub .plinkline a:hover {
  color: var(--colorPrimary);
  border-color: var(--colorPrimaryBorder);
  background: var(--colorPrimaryBg);
  text-decoration: none;
}

.pub .pabstract {
  margin-top: var(--marginXS);
  color: var(--colorTextSecondary);
  font-size: var(--fontSizeSm);
  line-height: 1.6;
}

.pub .ptags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: var(--marginXS);
}

.tag {
  font-size: var(--fontSizeSm);
  padding: 0 8px;
  height: 22px;
  line-height: 22px;
  border-radius: var(--borderRadiusSM);
  background: var(--colorFillTertiary);
  color: var(--colorTextSecondary);
  border: 1px solid var(--colorBorderSecondary);
}

/* ===== Footer ===== */
.footer {
  padding: var(--padding) 0;
  margin-top: var(--marginXL);
  color: var(--colorTextTertiary);
  font-size: var(--fontSizeSm);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--margin);
  text-align: center;
}

.kbd {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  padding: 2px 6px;
  border: 1px solid var(--colorBorder);
  border-radius: var(--borderRadiusSM);
  background: var(--colorFillQuaternary);
  color: var(--colorTextTertiary);
  font-size: var(--fontSizeSm);
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

/* ===== Responsive ===== */
@media (max-width: 720px) {
  .wrap {
    padding: var(--padding) var(--paddingSM) 60px;
  }

  .header {
    padding: var(--paddingSM);
    flex-wrap: wrap;
  }

  .like-container {
    order: 3;
    margin-left: 0;
    margin-top: var(--marginXS);
    width: 100%;
    justify-content: flex-start;
  }

  .nav a {
    padding: 4px 8px;
    font-size: var(--fontSizeSm);
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .photo {
    width: 140px;
    height: 186px;
    margin: 0 auto;
  }

  .pub {
    grid-template-columns: 1fr;
  }

  .pub .thumb {
    width: 100%;
    height: 180px;
  }

  .affiliations {
    gap: var(--margin);
  }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.4s var(--motionEase) both;
}

.card:nth-child(2) { animation-delay: 0.08s; }
.card:nth-child(3) { animation-delay: 0.16s; }

.pub {
  animation: fadeInUp 0.3s var(--motionEase) both;
}

.pub:nth-child(2) { animation-delay: 0.06s; }
.pub:nth-child(3) { animation-delay: 0.12s; }
.pub:nth-child(4) { animation-delay: 0.18s; }